40218300025 has 6 divisors (see below), whose sum is σ = 49870692062. Its totient is φ = 32174640000.

The previous prime is 40218300013. The next prime is 40218300037. The reversal of 40218300025 is 52000381204.

It is an interprime number because it is at equal distance from previous prime (40218300013) and next prime (40218300037).

It can be written as a sum of positive squares in 3 ways, for example, as 336612409 + 39881687616 = 18347^2 + 199704^2 .

It is not a de Polignac number, because 40218300025 - 2⁷ = 40218299897 is a prime.

It is a super-3 number, since 3×40218300025³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 1608732001 = 40218300025 / (4 + 0 + 2 + 1 + 8 + 3 + 0 + 0 + 0 + 2 + 5).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 804365976 + ... + 804366025.

Almost surely, 2^40218300025 is an apocalyptic number.

It is an amenable number.

40218300025 is a deficient number, since it is larger than the sum of its proper divisors (9652392037).

40218300025 is a wasteful number, since it uses less digits than its factorization.

40218300025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608732011 (or 1608732006 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 40218300025 its reverse (52000381204), we get a palindrome (92218681229).

The spelling of 40218300025 in words is "forty billion, two hundred eighteen million, three hundred thousand, twenty-five".