25742427 has 16 divisors (see below), whose sum is σ = 35140608. Its totient is φ = 16757280.

The previous prime is 25742413. The next prime is 25742429. The reversal of 25742427 is 72424752.

It is a happy number.

It is not a de Polignac number, because 25742427 - 2⁴ = 25742411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25742429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29398 + ... + 30260.

It is an arithmetic number, because the mean of its divisors is an integer number (2196288).

Almost surely, 2^25742427 is an apocalyptic number.

25742427 is a deficient number, since it is larger than the sum of its proper divisors (9398181).

25742427 is a wasteful number, since it uses less digits than its factorization.

25742427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090.

The product of its digits is 31360, while the sum is 33.

The square root of 25742427 is about 5073.6995378126. The cubic root of 25742427 is about 295.2680776775.

The spelling of 25742427 in words is "twenty-five million, seven hundred forty-two thousand, four hundred twenty-seven".