25613493 has 8 divisors (see below), whose sum is σ = 34730400. Its totient is φ = 16786128.

The previous prime is 25613477. The next prime is 25613503. The reversal of 25613493 is 39431652.

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

It is not a de Polignac number, because 25613493 - 2⁴ = 25613477 is a prime.

It is a super-2 number, since 2×25613493² = 1312102047322098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25613443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72178 + ... + 72531.

It is an arithmetic number, because the mean of its divisors is an integer number (4341300).

Almost surely, 2^25613493 is an apocalyptic number.

It is an amenable number.

25613493 is a deficient number, since it is larger than the sum of its proper divisors (9116907).

25613493 is a wasteful number, since it uses less digits than its factorization.

25613493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144771.

The product of its digits is 19440, while the sum is 33.

The square root of 25613493 is about 5060.9774747572. The cubic root of 25613493 is about 294.7742906269.

It can be divided in two parts, 25613 and 493, that added together give a triangular number (26106 = T₂₂₈).

The spelling of 25613493 in words is "twenty-five million, six hundred thirteen thousand, four hundred ninety-three".