1009015725 has 24 divisors (see below), whose sum is σ = 1683557920. Its totient is φ = 533200320.

The previous prime is 1009015723. The next prime is 1009015741. The reversal of 1009015725 is 5275109001.

It is not a de Polignac number, because 1009015725 - 2¹ = 1009015723 is a prime.

It is a super-2 number, since 2×1009015725² = 2036225466594551250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1009015692 and 1009015701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009015723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53539 + ... + 69888.

Almost surely, 2^1009015725 is an apocalyptic number.

1009015725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1009015725 is a deficient number, since it is larger than the sum of its proper divisors (674542195).

1009015725 is a wasteful number, since it uses less digits than its factorization.

1009015725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123549 (or 123544 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 1009015725 is about 31765.0078702965. The cubic root of 1009015725 is about 1002.9962551554.

The spelling of 1009015725 in words is "one billion, nine million, fifteen thousand, seven hundred twenty-five".