2625787440 has 60 divisors (see below), whose sum is σ = 8818271904. Its totient is φ = 700209792.

The previous prime is 2625787393. The next prime is 2625787447. The reversal of 2625787440 is 447875262.

It is a happy number.

2625787440 is a `hidden beast` number, since 2 + 6 + 2 + 578 + 74 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2625787447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1822744 + ... + 1824183.

Almost surely, 2^2625787440 is an apocalyptic number.

2625787440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2625787440 is an abundant number, since it is smaller than the sum of its proper divisors (6192484464).

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

2625787440 is a wasteful number, since it uses less digits than its factorization.

2625787440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3646946 (or 3646937 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The square root of 2625787440 is about 51242.4378811157. The cubic root of 2625787440 is about 1379.6000100990.

The spelling of 2625787440 in words is "two billion, six hundred twenty-five million, seven hundred eighty-seven thousand, four hundred forty".