25140925 has 6 divisors (see below), whose sum is σ = 31174778. Its totient is φ = 20112720.

The previous prime is 25140923. The next prime is 25140937. The reversal of 25140925 is 52904152.

It can be written as a sum of positive squares in 3 ways, for example, as 729 + 25140196 = 27^2 + 5014^2 .

It is not a de Polignac number, because 25140925 - 2¹ = 25140923 is a prime.

It is a super-2 number, since 2×25140925² = 1264132219711250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25140893 and 25140902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25140923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 502794 + ... + 502843.

Almost surely, 2^25140925 is an apocalyptic number.

25140925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25140925 is a deficient number, since it is larger than the sum of its proper divisors (6033853).

25140925 is a wasteful number, since it uses less digits than its factorization.

25140925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005647 (or 1005642 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 25140925 is about 5014.0726959229. The cubic root of 25140925 is about 292.9501676095.

The spelling of 25140925 in words is "twenty-five million, one hundred forty thousand, nine hundred twenty-five".