25190531 has 4 divisors (see below), whose sum is σ = 26059200. Its totient is φ = 24321864.

The previous prime is 25190527. The next prime is 25190533. The reversal of 25190531 is 13509152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25190531 - 2² = 25190527 is a prime.

It is a super-2 number, since 2×25190531² = 1269125704123922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25190531.

It is not an unprimeable number, because it can be changed into a prime (25190533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434291 + ... + 434348.

It is an arithmetic number, because the mean of its divisors is an integer number (6514800).

Almost surely, 2^25190531 is an apocalyptic number.

25190531 is a deficient number, since it is larger than the sum of its proper divisors (868669).

25190531 is an equidigital number, since it uses as much as digits as its factorization.

25190531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868668.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 25190531 is about 5019.0169356160. The cubic root of 25190531 is about 293.1427160624.

Adding to 25190531 its reverse (13509152), we get a palindrome (38699683).

The spelling of 25190531 in words is "twenty-five million, one hundred ninety thousand, five hundred thirty-one".