6461139425 has 96 divisors (see below), whose sum is σ = 9404398080. Its totient is φ = 4361011200.

The previous prime is 6461139413. The next prime is 6461139437. The reversal of 6461139425 is 5249311646.

It is an interprime number because it is at equal distance from previous prime (6461139413) and next prime (6461139437).

It is not a de Polignac number, because 6461139425 - 2¹⁶ = 6461073889 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 49321610 + ... + 49321740.

It is an arithmetic number, because the mean of its divisors is an integer number (97962480).

Almost surely, 2^6461139425 is an apocalyptic number.

6461139425 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6461139425 is a deficient number, since it is larger than the sum of its proper divisors (2943258655).

6461139425 is a wasteful number, since it uses less digits than its factorization.

6461139425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 358 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 6461139425 is about 80381.2131346623. The cubic root of 6461139425 is about 1862.5289745203.

The spelling of 6461139425 in words is "six billion, four hundred sixty-one million, one hundred thirty-nine thousand, four hundred twenty-five".