1025257470 has 16 divisors (see below), whose sum is σ = 2460618000. Its totient is φ = 273401984.

The previous prime is 1025257433. The next prime is 1025257487. The reversal of 1025257470 is 747525201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17087595 + ... + 17087654.

It is an arithmetic number, because the mean of its divisors is an integer number (153788625).

Almost surely, 2^1025257470 is an apocalyptic number.

1025257470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1025257470 is an abundant number, since it is smaller than the sum of its proper divisors (1435360530).

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

1025257470 is a wasteful number, since it uses less digits than its factorization.

1025257470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34175259.

The product of its (nonzero) digits is 19600, while the sum is 33.

The square root of 1025257470 is about 32019.6419405339. The cubic root of 1025257470 is about 1008.3492526382.

The spelling of 1025257470 in words is "one billion, twenty-five million, two hundred fifty-seven thousand, four hundred seventy".