25460621 has 2 divisors, whose sum is σ = 25460622. Its totient is φ = 25460620.

The previous prime is 25460599. The next prime is 25460623. The reversal of 25460621 is 12606452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14478025 + 10982596 = 3805^2 + 3314^2 .

It is a cyclic number.

It is not a de Polignac number, because 25460621 - 2²² = 21266317 is a prime.

Together with 25460623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25460623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12730310 + 12730311.

It is an arithmetic number, because the mean of its divisors is an integer number (12730311).

Almost surely, 2^25460621 is an apocalyptic number.

It is an amenable number.

25460621 is a deficient number, since it is larger than the sum of its proper divisors (1).

25460621 is an equidigital number, since it uses as much as digits as its factorization.

25460621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 25460621 is about 5045.8518606872. The cubic root of 25460621 is about 294.1866747575.

The spelling of 25460621 in words is "twenty-five million, four hundred sixty thousand, six hundred twenty-one".