1269042925 has 6 divisors (see below), whose sum is σ = 1573613258. Its totient is φ = 1015234320.

The previous prime is 1269042923. The next prime is 1269042937. The reversal of 1269042925 is 5292409621.

It can be written as a sum of positive squares in 3 ways, for example, as 198640836 + 1070402089 = 14094^2 + 32717^2 .

It is not a de Polignac number, because 1269042925 - 2¹ = 1269042923 is a prime.

It is a super-2 number, since 2×1269042925² = 3220939890985111250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1269042923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25380834 + ... + 25380883.

Almost surely, 2^1269042925 is an apocalyptic number.

It is an amenable number.

1269042925 is a deficient number, since it is larger than the sum of its proper divisors (304570333).

1269042925 is an equidigital number, since it uses as much as digits as its factorization.

1269042925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50761727 (or 50761722 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 1269042925 is about 35623.6287455391. The cubic root of 1269042925 is about 1082.6600310639.

The spelling of 1269042925 in words is "one billion, two hundred sixty-nine million, forty-two thousand, nine hundred twenty-five".