25056121 has 8 divisors (see below), whose sum is σ = 25651080. Its totient is φ = 24465792.

The previous prime is 25056107. The next prime is 25056127. The reversal of 25056121 is 12165052.

25056121 = 3539² + 3540².

It can be written as a sum of positive squares in 4 ways, for example, as 10310521 + 14745600 = 3211^2 + 3840^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25056121 - 2⁹ = 25055609 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25056092 and 25056101.

It is not an unprimeable number, because it can be changed into a prime (25056127) 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, 11335 + ... + 13363.

It is an arithmetic number, because the mean of its divisors is an integer number (3206385).

Almost surely, 2^25056121 is an apocalyptic number.

25056121 is the 3540-th centered square number.

It is an amenable number.

25056121 is a deficient number, since it is larger than the sum of its proper divisors (594959).

25056121 is a wasteful number, since it uses less digits than its factorization.

25056121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 25056121 is about 5005.6089539635. The cubic root of 25056121 is about 292.6204087020.

The spelling of 25056121 in words is "twenty-five million, fifty-six thousand, one hundred twenty-one".