25505000253 has 16 divisors (see below), whose sum is σ = 37787962240. Its totient is φ = 17002084032.

The previous prime is 25505000251. The next prime is 25505000273. The reversal of 25505000253 is 35200050552.

It is not a de Polignac number, because 25505000253 - 2¹ = 25505000251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25505000251) 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, 476325 + ... + 527157.

It is an arithmetic number, because the mean of its divisors is an integer number (2361747640).

Almost surely, 2^25505000253 is an apocalyptic number.

It is an amenable number.

25505000253 is a deficient number, since it is larger than the sum of its proper divisors (12282961987).

25505000253 is a wasteful number, since it uses less digits than its factorization.

25505000253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69425 (or 69419 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The spelling of 25505000253 in words is "twenty-five billion, five hundred five million, two hundred fifty-three", and thus it is an aban number.