25477961 has 2 divisors, whose sum is σ = 25477962. Its totient is φ = 25477960.

The previous prime is 25477943. The next prime is 25477981. The reversal of 25477961 is 16977452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25351225 + 126736 = 5035^2 + 356^2 .

It is a cyclic number.

It is not a de Polignac number, because 25477961 - 2⁶ = 25477897 is a prime.

It is not a weakly prime, because it can be changed into another prime (25477981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12738980 + 12738981.

It is an arithmetic number, because the mean of its divisors is an integer number (12738981).

Almost surely, 2^25477961 is an apocalyptic number.

It is an amenable number.

25477961 is a deficient number, since it is larger than the sum of its proper divisors (1).

25477961 is an equidigital number, since it uses as much as digits as its factorization.

25477961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 41.

The square root of 25477961 is about 5047.5698113052. The cubic root of 25477961 is about 294.2534450498.

The spelling of 25477961 in words is "twenty-five million, four hundred seventy-seven thousand, nine hundred sixty-one".