25799625 has 96 divisors (see below), whose sum is σ = 52565760. Its totient is φ = 12096000.

The previous prime is 25799621. The next prime is 25799677. The reversal of 25799625 is 52699752.

It is not a de Polignac number, because 25799625 - 2² = 25799621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (25799621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 363340 + ... + 363410.

It is an arithmetic number, because the mean of its divisors is an integer number (547560).

Almost surely, 2^25799625 is an apocalyptic number.

25799625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25799625 is an abundant number, since it is smaller than the sum of its proper divisors (26766135).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25799625 is a wasteful number, since it uses less digits than its factorization.

25799625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 115 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 25799625 is about 5079.3331255195. Note that the first 3 decimals coincide. The cubic root of 25799625 is about 295.4866047335.

The spelling of 25799625 in words is "twenty-five million, seven hundred ninety-nine thousand, six hundred twenty-five".