25450025 has 24 divisors (see below), whose sum is σ = 33554400. Its totient is φ = 19094400.

The previous prime is 25450013. The next prime is 25450027. The reversal of 25450025 is 52005452.

It is not a de Polignac number, because 25450025 - 2¹² = 25445929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25450027) 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, 62021 + ... + 62429.

It is an arithmetic number, because the mean of its divisors is an integer number (1398100).

Almost surely, 2^25450025 is an apocalyptic number.

25450025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25450025 is a deficient number, since it is larger than the sum of its proper divisors (8104375).

25450025 is a wasteful number, since it uses less digits than its factorization.

25450025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 25450025 is about 5044.8017800504. The cubic root of 25450025 is about 294.1458583332.

Adding to 25450025 its product of nonzero digits (2000), we get a square (25452025 = 5045²).

Adding to 25450025 its reverse (52005452), we get a palindrome (77455477).

The spelling of 25450025 in words is "twenty-five million, four hundred fifty thousand, twenty-five".