1625118253 has 4 divisors (see below), whose sum is σ = 1772856288. Its totient is φ = 1477380220.

The previous prime is 1625118251. The next prime is 1625118293. The reversal of 1625118253 is 3528115261.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3528115261 = 11 ⋅320737751.

It is a cyclic number.

It is not a de Polignac number, because 1625118253 - 2¹ = 1625118251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625118251) 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, 73869001 + ... + 73869022.

It is an arithmetic number, because the mean of its divisors is an integer number (443214072).

Almost surely, 2^1625118253 is an apocalyptic number.

It is an amenable number.

1625118253 is a deficient number, since it is larger than the sum of its proper divisors (147738035).

1625118253 is a wasteful number, since it uses less digits than its factorization.

1625118253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147738034.

The product of its digits is 14400, while the sum is 34.

The square root of 1625118253 is about 40312.7554627564. The cubic root of 1625118253 is about 1175.6958613615.

The spelling of 1625118253 in words is "one billion, six hundred twenty-five million, one hundred eighteen thousand, two hundred fifty-three".