2540425684 has 6 divisors (see below), whose sum is σ = 4445744954. Its totient is φ = 1270212840.

The previous prime is 2540425631. The next prime is 2540425691. The reversal of 2540425684 is 4865240452.

It can be written as a sum of positive squares in only one way, i.e., 2133516100 + 406909584 = 46190^2 + 20172^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317553207 + ... + 317553214.

Almost surely, 2^2540425684 is an apocalyptic number.

It is an amenable number.

2540425684 is a deficient number, since it is larger than the sum of its proper divisors (1905319270).

2540425684 is a wasteful number, since it uses less digits than its factorization.

2540425684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635106425 (or 635106423 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 40.

The square root of 2540425684 is about 50402.6356850512. The cubic root of 2540425684 is about 1364.4852069060.

The spelling of 2540425684 in words is "two billion, five hundred forty million, four hundred twenty-five thousand, six hundred eighty-four".