25020531 has 12 divisors (see below), whose sum is σ = 36636808. Its totient is φ = 16451424.

The previous prime is 25020529. The next prime is 25020557. The reversal of 25020531 is 13502052.

It is a happy number.

It is not a de Polignac number, because 25020531 - 2¹ = 25020529 is a prime.

It is a super-2 number, since 2×25020531² = 1252053943043922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25020571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18385 + ... + 19698.

Almost surely, 2^25020531 is an apocalyptic number.

25020531 is a deficient number, since it is larger than the sum of its proper divisors (11616277).

25020531 is a wasteful number, since it uses less digits than its factorization.

25020531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38162 (or 38159 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 25020531 is about 5002.0526786510. The cubic root of 25020531 is about 292.4817959304.

Adding to 25020531 its reverse (13502052), we get a palindrome (38522583).

The spelling of 25020531 in words is "twenty-five million, twenty thousand, five hundred thirty-one".