25113649 has 16 divisors (see below), whose sum is σ = 29134080. Its totient is φ = 21407760.

The previous prime is 25113629. The next prime is 25113653. The reversal of 25113649 is 94631152.

25113649 = T₃₈₂ + T₃₈₃ + ... + T₅₉₀.

It is a de Polignac number, because none of the positive numbers 2^k-25113649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25113649.

It is not an unprimeable number, because it can be changed into a prime (25113619) 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, 21802 + ... + 22924.

It is an arithmetic number, because the mean of its divisors is an integer number (1820880).

Almost surely, 2^25113649 is an apocalyptic number.

It is an amenable number.

25113649 is a deficient number, since it is larger than the sum of its proper divisors (4020431).

25113649 is a wasteful number, since it uses less digits than its factorization.

25113649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260.

The product of its digits is 6480, while the sum is 31.

The square root of 25113649 is about 5011.3520131797. The cubic root of 25113649 is about 292.8441863563.

The spelling of 25113649 in words is "twenty-five million, one hundred thirteen thousand, six hundred forty-nine".