25420311 has 40 divisors (see below), whose sum is σ = 43908480. Its totient is φ = 14355792.

The previous prime is 25420277. The next prime is 25420319. The reversal of 25420311 is 11302452.

It is not a de Polignac number, because 25420311 - 2⁹ = 25419799 is a prime.

It is a super-2 number, since 2×25420311² = 1292384422673442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25420319) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 60460 + ... + 60878.

It is an arithmetic number, because the mean of its divisors is an integer number (1097712).

Almost surely, 2^25420311 is an apocalyptic number.

25420311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25420311 is a deficient number, since it is larger than the sum of its proper divisors (18488169).

25420311 is a wasteful number, since it uses less digits than its factorization.

25420311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 25420311 is about 5041.8559082941. The cubic root of 25420311 is about 294.0313377674.

Adding to 25420311 its reverse (11302452), we get a palindrome (36722763).

The spelling of 25420311 in words is "twenty-five million, four hundred twenty thousand, three hundred eleven".