25742961 has 8 divisors (see below), whose sum is σ = 38137760. Its totient is φ = 17161956.

The previous prime is 25742909. The next prime is 25742963. The reversal of 25742961 is 16924752.

25742961 is a `hidden beast` number, since 2 + 574 + 29 + 61 = 666.

It is not a de Polignac number, because 25742961 - 2⁷ = 25742833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25742963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476695 + ... + 476748.

It is an arithmetic number, because the mean of its divisors is an integer number (4767220).

Almost surely, 2^25742961 is an apocalyptic number.

It is an amenable number.

25742961 is a deficient number, since it is larger than the sum of its proper divisors (12394799).

25742961 is an equidigital number, since it uses as much as digits as its factorization.

25742961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953452 (or 953446 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 25742961 is about 5073.7521618621. The cubic root of 25742961 is about 295.2701193402.

The spelling of 25742961 in words is "twenty-five million, seven hundred forty-two thousand, nine hundred sixty-one".