1625634265 has 32 divisors (see below), whose sum is σ = 2158119936. Its totient is φ = 1170094080.

The previous prime is 1625634259. The next prime is 1625634287. The reversal of 1625634265 is 5624365261.

It is a happy number.

It is not a de Polignac number, because 1625634265 - 2⁵ = 1625634233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214989 + ... + 222421.

It is an arithmetic number, because the mean of its divisors is an integer number (67441248).

Almost surely, 2^1625634265 is an apocalyptic number.

It is an amenable number.

1625634265 is a deficient number, since it is larger than the sum of its proper divisors (532485671).

1625634265 is a wasteful number, since it uses less digits than its factorization.

1625634265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7569.

The product of its digits is 259200, while the sum is 40.

The square root of 1625634265 is about 40319.1550630714. The cubic root of 1625634265 is about 1175.8202849170.

The spelling of 1625634265 in words is "one billion, six hundred twenty-five million, six hundred thirty-four thousand, two hundred sixty-five".