1261060225015 has 8 divisors (see below), whose sum is σ = 1513841399280. Its totient is φ = 1008468760512.

The previous prime is 1261060224997. The next prime is 1261060225027. The reversal of 1261060225015 is 5105220601621.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1261060225015 is a prime.

It is a super-2 number, since 2×1261060225015² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47412814 + ... + 47439403.

It is an arithmetic number, because the mean of its divisors is an integer number (189230174910).

Almost surely, 2^{1261060225015} is an apocalyptic number.

1261060225015 is a deficient number, since it is larger than the sum of its proper divisors (252781174265).

1261060225015 is an equidigital number, since it uses as much as digits as its factorization.

1261060225015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94854881.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 1261060225015 its reverse (5105220601621), we get a palindrome (6366280826636).

The spelling of 1261060225015 in words is "one trillion, two hundred sixty-one billion, sixty million, two hundred twenty-five thousand, fifteen".