1625542341 has 4 divisors (see below), whose sum is σ = 2167389792. Its totient is φ = 1083694892.

The previous prime is 1625542339. The next prime is 1625542367. The reversal of 1625542341 is 1432455261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1625542341 - 2¹ = 1625542339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625542741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270923721 + ... + 270923726.

It is an arithmetic number, because the mean of its divisors is an integer number (541847448).

Almost surely, 2^1625542341 is an apocalyptic number.

It is an amenable number.

1625542341 is a deficient number, since it is larger than the sum of its proper divisors (541847451).

1625542341 is an equidigital number, since it uses as much as digits as its factorization.

1625542341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541847450.

The product of its digits is 28800, while the sum is 33.

The square root of 1625542341 is about 40318.0150925117. The cubic root of 1625542341 is about 1175.7981216413.

The spelling of 1625542341 in words is "one billion, six hundred twenty-five million, five hundred forty-two thousand, three hundred forty-one".