1071731625 has 16 divisors (see below), whose sum is σ = 1783362048. Its totient is φ = 571590000.

The previous prime is 1071731611. The next prime is 1071731657. The reversal of 1071731625 is 5261371701.

It is not a de Polignac number, because 1071731625 - 2⁹ = 1071731113 is a prime.

It is a super-2 number, since 2×1071731625² = 2297217352050281250, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1428601 + ... + 1429350.

It is an arithmetic number, because the mean of its divisors is an integer number (111460128).

Almost surely, 2^1071731625 is an apocalyptic number.

1071731625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1071731625 is a deficient number, since it is larger than the sum of its proper divisors (711630423).

1071731625 is an equidigital number, since it uses as much as digits as its factorization.

1071731625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857969 (or 2857959 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 1071731625 is about 32737.3124278704. The cubic root of 1071731625 is about 1023.3605757501.

The spelling of 1071731625 in words is "one billion, seventy-one million, seven hundred thirty-one thousand, six hundred twenty-five".