25353993 has 16 divisors (see below), whose sum is σ = 38835200. Its totient is φ = 14412816.

The previous prime is 25353983. The next prime is 25354019. The reversal of 25353993 is 39935352.

It is not a de Polignac number, because 25353993 - 2¹⁷ = 25222921 is a prime.

It is a super-2 number, since 2×25353993² = 1285649922088098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25353973) 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, 1146 + ... + 7212.

It is an arithmetic number, because the mean of its divisors is an integer number (2427200).

Almost surely, 2^25353993 is an apocalyptic number.

It is an amenable number.

25353993 is a deficient number, since it is larger than the sum of its proper divisors (13481207).

25353993 is a wasteful number, since it uses less digits than its factorization.

25353993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6276.

The product of its digits is 109350, while the sum is 39.

The square root of 25353993 is about 5035.2748683662. The cubic root of 25353993 is about 293.7754196804.

The spelling of 25353993 in words is "twenty-five million, three hundred fifty-three thousand, nine hundred ninety-three".