1025615 has 8 divisors (see below), whose sum is σ = 1261008. Its totient is φ = 800320.

The previous prime is 1025611. The next prime is 1025621. The reversal of 1025615 is 5165201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1025615 - 2² = 1025611 is a prime.

It is a super-2 number, since 2×1025615² = 2103772256450, 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 (1025611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2297 + ... + 2706.

It is an arithmetic number, because the mean of its divisors is an integer number (157626).

2^1025615 is an apocalyptic number.

1025615 is a deficient number, since it is larger than the sum of its proper divisors (235393).

1025615 is an equidigital number, since it uses as much as digits as its factorization.

1025615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5049.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1025615 is about 1012.7265178714. The cubic root of 1025615 is about 100.8466450259.

The spelling of 1025615 in words is "one million, twenty-five thousand, six hundred fifteen".