25780014525 has 24 divisors (see below), whose sum is σ = 42869354400. Its totient is φ = 13669858240.

The previous prime is 25780014521. The next prime is 25780014527. The reversal of 25780014525 is 52541008752.

It is not a de Polignac number, because 25780014525 - 2² = 25780014521 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25780014521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 980475 + ... + 1006424.

It is an arithmetic number, because the mean of its divisors is an integer number (1786223100).

Almost surely, 2^25780014525 is an apocalyptic number.

25780014525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25780014525 is a deficient number, since it is larger than the sum of its proper divisors (17089339875).

25780014525 is a wasteful number, since it uses less digits than its factorization.

25780014525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987085 (or 1987080 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 39.

The spelling of 25780014525 in words is "twenty-five billion, seven hundred eighty million, fourteen thousand, five hundred twenty-five".