2525507985 has 256 divisors, whose sum is σ = 5796790272. Its totient is φ = 904780800.

The previous prime is 2525507977. The next prime is 2525507989. The reversal of 2525507985 is 5897055252.

It is a happy number.

2525507985 is a nontrivial binomial coefficient, being equal to C(71071, 2).

It is not a de Polignac number, because 2525507985 - 2³ = 2525507977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2525507989) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 24519444 + ... + 24519546.

It is an arithmetic number, because the mean of its divisors is an integer number (22643712).

Almost surely, 2^2525507985 is an apocalyptic number.

2525507985 is the 71070-th triangular number.

It is an amenable number.

2525507985 is an abundant number, since it is smaller than the sum of its proper divisors (3271282287).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2525507985 is a wasteful number, since it uses less digits than its factorization.

2525507985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236.

The product of its (nonzero) digits is 1260000, while the sum is 48.

The square root of 2525507985 is about 50254.4324910749. The cubic root of 2525507985 is about 1361.8091524484.

The spelling of 2525507985 in words is "two billion, five hundred twenty-five million, five hundred seven thousand, nine hundred eighty-five".