25440053 has 8 divisors (see below), whose sum is σ = 26622648. Its totient is φ = 24283584.

The previous prime is 25440043. The next prime is 25440061. The reversal of 25440053 is 35004452.

It can be written as a sum of positive squares in 4 ways, for example, as 3378244 + 22061809 = 1838^2 + 4697^2 .

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 25440053 - 2¹⁴ = 25423669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25440013) 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, 4526 + ... + 8447.

It is an arithmetic number, because the mean of its divisors is an integer number (3327831).

Almost surely, 2^25440053 is an apocalyptic number.

It is an amenable number.

25440053 is a deficient number, since it is larger than the sum of its proper divisors (1182595).

25440053 is a wasteful number, since it uses less digits than its factorization.

25440053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13063.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 25440053 is about 5043.8133391314. The cubic root of 25440053 is about 294.1074352447.

The spelling of 25440053 in words is "twenty-five million, four hundred forty thousand, fifty-three".