145415225555 has 4 divisors (see below), whose sum is σ = 174498270672. Its totient is φ = 116332180440.

The previous prime is 145415225551. The next prime is 145415225573. The reversal of 145415225555 is 555522514541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 145415225555 - 2² = 145415225551 is a prime.

It is a super-2 number, since 2×145415225555² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145415225551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14541522551 + ... + 14541522560.

It is an arithmetic number, because the mean of its divisors is an integer number (43624567668).

Almost surely, 2^145415225555 is an apocalyptic number.

145415225555 is a deficient number, since it is larger than the sum of its proper divisors (29083045117).

145415225555 is an equidigital number, since it uses as much as digits as its factorization.

145415225555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29083045116.

The product of its digits is 1000000, while the sum is 44.

The spelling of 145415225555 in words is "one hundred forty-five billion, four hundred fifteen million, two hundred twenty-five thousand, five hundred fifty-five".