1229391025 has 12 divisors (see below), whose sum is σ = 1573621504. Its totient is φ = 951786000.

The previous prime is 1229390993. The next prime is 1229391047. The reversal of 1229391025 is 5201939221.

It is not a de Polignac number, because 1229391025 - 2⁵ = 1229390993 is a prime.

It is a super-2 number, since 2×1229391025² = 3022804584701101250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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, 792381 + ... + 793930.

Almost surely, 2^1229391025 is an apocalyptic number.

It is an amenable number.

1229391025 is a deficient number, since it is larger than the sum of its proper divisors (344230479).

1229391025 is a wasteful number, since it uses less digits than its factorization.

1229391025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586352 (or 1586347 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 1229391025 is about 35062.6728159734. The cubic root of 1229391025 is about 1071.2644163958.

The spelling of 1229391025 in words is "one billion, two hundred twenty-nine million, three hundred ninety-one thousand, twenty-five".