1020125415 has 16 divisors (see below), whose sum is σ = 1633861728. Its totient is φ = 543513216.

The previous prime is 1020125411. The next prime is 1020125423. The reversal of 1020125415 is 5145210201.

It is not a de Polignac number, because 1020125415 - 2² = 1020125411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020125391 and 1020125400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020125411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19152 + ... + 49061.

It is an arithmetic number, because the mean of its divisors is an integer number (102116358).

Almost surely, 2^1020125415 is an apocalyptic number.

1020125415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1020125415 is a deficient number, since it is larger than the sum of its proper divisors (613736313).

1020125415 is an equidigital number, since it uses as much as digits as its factorization.

1020125415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69218.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1020125415 is about 31939.4022329786. The cubic root of 1020125415 is about 1006.6639645971.

Adding to 1020125415 its reverse (5145210201), we get a palindrome (6165335616).

The spelling of 1020125415 in words is "one billion, twenty million, one hundred twenty-five thousand, four hundred fifteen".