25147057 has 4 divisors (see below), whose sum is σ = 27081460. Its totient is φ = 23212656.

The previous prime is 25147049. The next prime is 25147079. The reversal of 25147057 is 75074152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7160976 + 17986081 = 2676^2 + 4241^2 .

It is a cyclic number.

It is not a de Polignac number, because 25147057 - 2³ = 25147049 is a prime.

It is a super-2 number, since 2×25147057² = 1264748951522498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25147007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 967182 + ... + 967207.

It is an arithmetic number, because the mean of its divisors is an integer number (6770365).

Almost surely, 2^25147057 is an apocalyptic number.

It is an amenable number.

25147057 is a deficient number, since it is larger than the sum of its proper divisors (1934403).

25147057 is a wasteful number, since it uses less digits than its factorization.

25147057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934402.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 25147057 is about 5014.6841376103. The cubic root of 25147057 is about 292.9739830207.

The spelling of 25147057 in words is "twenty-five million, one hundred forty-seven thousand, fifty-seven".