2500701640 has 16 divisors (see below), whose sum is σ = 5626578780. Its totient is φ = 1000280640.

The previous prime is 2500701631. The next prime is 2500701661. The reversal of 2500701640 is 461070052.

It can be written as a sum of positive squares in 2 ways, for example, as 2249225476 + 251476164 = 47426^2 + 15858^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31258731 + ... + 31258810.

Almost surely, 2^2500701640 is an apocalyptic number.

2500701640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2500701640 is an abundant number, since it is smaller than the sum of its proper divisors (3125877140).

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

2500701640 is a wasteful number, since it uses less digits than its factorization.

2500701640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62517552 (or 62517548 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 2500701640 is about 50007.0159077704. The cubic root of 2500701640 is about 1357.3357660195.

Adding to 2500701640 its reverse (461070052), we get a palindrome (2961771692).

The spelling of 2500701640 in words is "two billion, five hundred million, seven hundred one thousand, six hundred forty".