1072697825 has 6 divisors (see below), whose sum is σ = 1330145334. Its totient is φ = 858158240.

The previous prime is 1072697819. The next prime is 1072697831. The reversal of 1072697825 is 5287962701.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1072697819) and next prime (1072697831).

It can be written as a sum of positive squares in 3 ways, for example, as 10394176 + 1062303649 = 3224^2 + 32593^2 .

It is not a de Polignac number, because 1072697825 - 2¹⁸ = 1072435681 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1072697825.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21453932 + ... + 21453981.

It is an arithmetic number, because the mean of its divisors is an integer number (221690889).

Almost surely, 2^1072697825 is an apocalyptic number.

It is an amenable number.

1072697825 is a deficient number, since it is larger than the sum of its proper divisors (257447509).

1072697825 is an equidigital number, since it uses as much as digits as its factorization.

1072697825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42907923 (or 42907918 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 1072697825 is about 32752.0659653708. The cubic root of 1072697825 is about 1023.6680140359.

The spelling of 1072697825 in words is "one billion, seventy-two million, six hundred ninety-seven thousand, eight hundred twenty-five".