25120425 has 24 divisors (see below), whose sum is σ = 45309600. Its totient is φ = 12179200.

The previous prime is 25120423. The next prime is 25120427. The reversal of 25120425 is 52402152.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25120423) and next prime (25120427).

It is not a de Polignac number, because 25120425 - 2¹ = 25120423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25120423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14400 + ... + 16049.

It is an arithmetic number, because the mean of its divisors is an integer number (1887900).

Almost surely, 2^25120425 is an apocalyptic number.

25120425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25120425 is a deficient number, since it is larger than the sum of its proper divisors (20189175).

25120425 is a wasteful number, since it uses less digits than its factorization.

25120425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30473 (or 30468 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 25120425 is about 5012.0280326431. The cubic root of 25120425 is about 292.8705217536.

Adding to 25120425 its reverse (52402152), we get a palindrome (77522577).

The spelling of 25120425 in words is "twenty-five million, one hundred twenty thousand, four hundred twenty-five".