1625434101 has 8 divisors (see below), whose sum is σ = 2408050560. Its totient is φ = 1083622716.

The previous prime is 1625434091. The next prime is 1625434123. The reversal of 1625434101 is 1014345261.

It is a happy number.

1625434101 is a `hidden beast` number, since 1 + 625 + 4 + 34 + 1 + 0 + 1 = 666.

1625434101 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1625434101 - 2¹³ = 1625425909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 60201263 = 1625434101 / (1 + 6 + 2 + 5 + 4 + 3 + 4 + 1 + 0 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625434801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30100605 + ... + 30100658.

It is an arithmetic number, because the mean of its divisors is an integer number (301006320).

Almost surely, 2^1625434101 is an apocalyptic number.

It is an amenable number.

1625434101 is a deficient number, since it is larger than the sum of its proper divisors (782616459).

1625434101 is an equidigital number, since it uses as much as digits as its factorization.

1625434101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60201272 (or 60201266 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1625434101 is about 40316.6727421795. The cubic root of 1625434101 is about 1175.7720234359.

Adding to 1625434101 its reverse (1014345261), we get a palindrome (2639779362).

The spelling of 1625434101 in words is "one billion, six hundred twenty-five million, four hundred thirty-four thousand, one hundred one".