3125645705 has 48 divisors (see below), whose sum is σ = 4750035840. Its totient is φ = 1932263424.

The previous prime is 3125645693. The next prime is 3125645717. The reversal of 3125645705 is 5075465213.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3125645693) and next prime (3125645717).

It is not a de Polignac number, because 3125645705 - 2⁴ = 3125645689 is a prime.

It is a super-2 number, since 2×3125645705² = 19539322146369894050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 248201 + ... + 260489.

It is an arithmetic number, because the mean of its divisors is an integer number (98959080).

Almost surely, 2^3125645705 is an apocalyptic number.

3125645705 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3125645705 is a deficient number, since it is larger than the sum of its proper divisors (1624390135).

3125645705 is a wasteful number, since it uses less digits than its factorization.

3125645705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12370 (or 12357 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 38.

The square root of 3125645705 is about 55907.4745002848. The cubic root of 3125645705 is about 1462.1095583250.

The spelling of 3125645705 in words is "three billion, one hundred twenty-five million, six hundred forty-five thousand, seven hundred five".