1025645415 has 12 divisors (see below), whose sum is σ = 1641231144. Its totient is φ = 546944736.

The previous prime is 1025645393. The next prime is 1025645437. The reversal of 1025645415 is 5145465201.

It is an interprime number because it is at equal distance from previous prime (1025645393) and next prime (1025645437).

It is not a de Polignac number, because 1025645415 - 2⁶ = 1025645351 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119901 + ... + 128169.

It is an arithmetic number, because the mean of its divisors is an integer number (136769262).

Almost surely, 2^1025645415 is an apocalyptic number.

1025645415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1025645415 is a deficient number, since it is larger than the sum of its proper divisors (615585729).

1025645415 is an frugal number, since it uses more digits than its factorization.

1025645415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16546 (or 8277 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 1025645415 is about 32025.6992897891. The cubic root of 1025645415 is about 1008.4764189786.

Multiplying 1025645415 by its product of nonzero digits (24000), we get a square (24615489960000 = 4961400²).

The spelling of 1025645415 in words is "one billion, twenty-five million, six hundred forty-five thousand, four hundred fifteen".