25451625 has 32 divisors (see below), whose sum is σ = 43026048. Its totient is φ = 13358400.

The previous prime is 25451623. The next prime is 25451627. The reversal of 25451625 is 52615452.

It is an interprime number because it is at equal distance from previous prime (25451623) and next prime (25451627).

It is not a de Polignac number, because 25451625 - 2¹ = 25451623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25451592 and 25451601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25451623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24619 + ... + 25631.

It is an arithmetic number, because the mean of its divisors is an integer number (1344564).

Almost surely, 2^25451625 is an apocalyptic number.

25451625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25451625 is a deficient number, since it is larger than the sum of its proper divisors (17574423).

25451625 is a wasteful number, since it uses less digits than its factorization.

25451625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098 (or 1088 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 25451625 is about 5044.9603566331. The cubic root of 25451625 is about 294.1520223547.

It can be divided in two parts, 254516 and 25, that added together give a triangular number (254541 = T₇₁₃).

The spelling of 25451625 in words is "twenty-five million, four hundred fifty-one thousand, six hundred twenty-five".