25250528501 has 4 divisors (see below), whose sum is σ = 27546031104. Its totient is φ = 22955025900.

The previous prime is 25250528473. The next prime is 25250528507. The reversal of 25250528501 is 10582505252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25250528501 - 2⁶ = 25250528437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25250528507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1147751285 + ... + 1147751306.

It is an arithmetic number, because the mean of its divisors is an integer number (6886507776).

Almost surely, 2^25250528501 is an apocalyptic number.

It is an amenable number.

25250528501 is a deficient number, since it is larger than the sum of its proper divisors (2295502603).

25250528501 is a wasteful number, since it uses less digits than its factorization.

25250528501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2295502602.

The product of its (nonzero) digits is 40000, while the sum is 35.

The spelling of 25250528501 in words is "twenty-five billion, two hundred fifty million, five hundred twenty-eight thousand, five hundred one".