1257059265 has 64 divisors (see below), whose sum is σ = 2513590272. Its totient is φ = 521164800.

The previous prime is 1257059257. The next prime is 1257059281. The reversal of 1257059265 is 5629507521.

It is not a de Polignac number, because 1257059265 - 2³ = 1257059257 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 603025 + ... + 605105.

It is an arithmetic number, because the mean of its divisors is an integer number (39274848).

Almost surely, 2^1257059265 is an apocalyptic number.

1257059265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1257059265 is a deficient number, since it is larger than the sum of its proper divisors (1256531007).

1257059265 is a wasteful number, since it uses less digits than its factorization.

1257059265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630.

The product of its (nonzero) digits is 189000, while the sum is 42.

The square root of 1257059265 is about 35455.0315893245. The cubic root of 1257059265 is about 1079.2413696707.

The spelling of 1257059265 in words is "one billion, two hundred fifty-seven million, fifty-nine thousand, two hundred sixty-five".