2525380740 has 60 divisors (see below), whose sum is σ = 7922217996. Its totient is φ = 673434432.

The previous prime is 2525380699. The next prime is 2525380777. The reversal of 2525380740 is 470835252.

2525380740 is a `hidden beast` number, since 2 + 52 + 538 + 0 + 74 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 660695616 + 1864685124 = 25704^2 + 43182^2 .

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 (36).

It is a junction number, because it is equal to n+sod(n) for n = 2525380695 and 2525380704.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 777819 + ... + 781058.

Almost surely, 2^2525380740 is an apocalyptic number.

2525380740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2525380740 is an abundant number, since it is smaller than the sum of its proper divisors (5396837256).

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

2525380740 is a wasteful number, since it uses less digits than its factorization.

2525380740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558898 (or 1558887 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 2525380740 is about 50253.1664673979. The cubic root of 2525380740 is about 1361.7862809684.

The spelling of 2525380740 in words is "two billion, five hundred twenty-five million, three hundred eighty thousand, seven hundred forty".