25531351 has 2 divisors, whose sum is σ = 25531352. Its totient is φ = 25531350.

The previous prime is 25531349. The next prime is 25531361. The reversal of 25531351 is 15313552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25531351 - 2¹ = 25531349 is a prime.

Together with 25531349, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25531301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12765675 + 12765676.

It is an arithmetic number, because the mean of its divisors is an integer number (12765676).

Almost surely, 2^25531351 is an apocalyptic number.

25531351 is a deficient number, since it is larger than the sum of its proper divisors (1).

25531351 is an equidigital number, since it uses as much as digits as its factorization.

25531351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2250, while the sum is 25.

The square root of 25531351 is about 5052.8557272101. The cubic root of 25531351 is about 294.4588412670.

The spelling of 25531351 in words is "twenty-five million, five hundred thirty-one thousand, three hundred fifty-one".