25999953 has 32 divisors (see below), whose sum is σ = 42614784. Its totient is φ = 13761792.

The previous prime is 25999949. The next prime is 26000003. The reversal of 25999953 is 35999952.

It is not a de Polignac number, because 25999953 - 2² = 25999949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 25999896 and 25999905.

It is not an unprimeable number, because it can be changed into a prime (25999933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23376 + ... + 24462.

It is an arithmetic number, because the mean of its divisors is an integer number (1331712).

Almost surely, 2^25999953 is an apocalyptic number.

It is an amenable number.

25999953 is a deficient number, since it is larger than the sum of its proper divisors (16614831).

25999953 is a wasteful number, since it uses less digits than its factorization.

25999953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181.

The product of its digits is 984150, while the sum is 51.

The square root of 25999953 is about 5099.0149048615. The cubic root of 25999953 is about 296.2494283313.

Subtracting 25999953 from its reverse (35999952), we obtain a palindrome (9999999).

The spelling of 25999953 in words is "twenty-five million, nine hundred ninety-nine thousand, nine hundred fifty-three".